Centrifugal liquid-separator.



Flu 797,297.. PATENTED AUG-.15, 1905. B. LJUNGSTRGM.

CENTRIFUGAL LIQUID SBPARATOR.

APPLICATION FILED MAR. 14. 1905.

2 SHEETS-SHEET l.

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PATENTED AUGQ15, 1905.

13.. LJUNGSTRGMn OENTRIFUGAL LIQUID SEPARATOR.

APPLICATION FILED MAR. 14, 1905,

2 SHEETS-5'HEET 2.

ANDREW s 02mm co. MJYO-UTHOGRAPHERS NASWHGYO'I, n c

l l li lElU SiliflllES PATNT OFFIC.

BlRGER- LdUNGS'llfldh l, OF STOCKHOLM, SWEDEN, ASSIGNOR TO A'l .llIEBO-LAG'ET SEPARATUR, OF STOUliZl-lOLh l, SVVEDFN, A COMPANY.

QENTHil UGAL LlQlJlEiWiESEPAFiATOFh Patented Aug. 15, 1905.

Application filed March 14, 1905. Serial No. 250,101.

To all whom it may (JUN/067":

Be it known that I, BIRGER LJUNesrRoM, a subject of the King of Swedenand Norway, residing at Stockholm, Sweden, have invented certain new anduseful Improvements in Centri'lugal Liquid-Separators and I do herebydeclare the following to be a full, clear, and exact description oi theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters o'l reference marked there on,which form. a part of this specification.

The present invention relates to a tl eed de vice for the whole milk inliners for centrifugal separators, consisting of superposed conicalplates, in which each of said plates is provided with holes situated ata radial distance from the central line of the bowl that approximatelycorresponds to the neutral zone of the fluid being subjected to theseparating process. In liners of this kind the milk has been introducedat the bottom oi the bowl through a central feed-pipe and filled theplace beneath the undermost plate, whereafter by further supply of milkthe same passed through the holes in the undermost plate and filled upthe first space and then successively the other spaces in the liner,whereby the separating process took place in the known manner. For anillustration of a liner having such a construction and operation see theGerm an Patent N 0. 82,875. This iced device is quite applicable in casethe bot tom oil the bowl is plane and secured to the top of thedriving-shaft. I'l, on. the contrary, the bottom of the bowl is madeconvex inwardly, like the bottom of a bottle, and provided with aconical or cylindrical prolongated part in which the top of thedrivingshait is located, and this construction is now often used inmodern centrifugal apparatus, certain difficulties arise if the milk is:led. in at the bottom of the bowl, the principal inconveniencecrmsisting in the dilliculty o'l cleaning the closed. inlet-tubes, whichin this case must be relatively long.

My invention relates to centrifugal separaters ol the kind lastmentioned, and has for object to feed the milk in such liners in such away that a uniform distribution o'l. th 0 whole milk in theseparating-spaces of the liner takes place while using only short andlarge inlet-passages, which. are easy to clean.

My invention. consists in means arranged and adapted to apply to a linerof this character by which. the whole milk is fed in at the top of theliner instead of at the bottom. For this purpose either the upper plateor the central feed-pipe is provided with a flangeshaped enlargement, ora loosely-connected. ring is 1 itted in between the central feed-pipeand the upper plate or between the central feed-pipe and the neck of thebowl, (if there is no upper plate,) orit the central feed-pipe and theupper plate are made in. one single piece I make a flange or ring shapedenlargement at the junction of these parts. The whole milk is conductedthrough openings inthe central feed-pipe situated above the liner andfurther through channels communicating with said openings and located inthe above-named. en

large'ments of the central feed-pipe or the upper plate, said channelsending in. the uppermost separating-space, and thus establishing acommunication between the central feedtube and the separatirig-chamber.For directing the separated. cream vertical channels are bored in theflange-shaped enlargements, said channels not communicating with theaforesaid channels for the whole milk. The

separated blue milk is led oil in the known manner through suitableopenings in the bowl-neck.

In the accompanying drawings, comprising two sheets, Figure 1 is asectional. elevation of the upper part ol a centrifugal scpa rater bowlprovided with the improved iced device. Fig. 2 is an, inverted plan viewof the upper plate of Fig. 1. Fig. 3 a crosssection on. .line 1, Fig. 1,the outer bowl. being removed. Fig. l is a sectional elevation of theupper part oi a centrifugalseparator bowl, showing a modified form ofthe f ood device. liig. 5 is an inverted plan view ol the upper plate ofFig. l. Fig. 6 is a cr0ss-section on line 2 2, Fig. 4;, the outer bowlbeing removed. Fig. 7 is a sectional elevation o'l. a .uiodilied Form ofthe upper plate. Fig. 8 is a plan view of same. Fig. 9 is a sectional.elevation of the upper part of a centrifugal bowl provided with. theimproved .lced device l'or the whole milk and with outlet-tubes for theseparated skim-milk. F 10 is a plan. View ol the upper plate ol Fig. t).Fig. 1.1. is a sectional. elevation of the upper part ol a contri'l'ugalseparator, showing a modified form oi the nnproved. iced device for theix'icoining whole milk. Fig. 12 is a cross-section of the centralfeed-tube on line 3 3, Fig. 11. Fig. 13 is a sectional elevation ofstill another modification of the improved feed device.

Like letters of reference refer to like parts in the several figures.

Referring to Figs. 1-3, a is the bowl. I) is the central feed-pipe, cthe conical plates provided with a number of holes situated above eachother, and (Z is the upper plate, which is prolongated upwardly to theneck. The upper plate is provided with a flange 6, closing tightlyagainst the central feed-pipe. In this flange vertical holes orchannelsfare bored, through which the separated cream passes upwardly tothe cream-outlet. The upper plate is further provided with a ringshapedthicker part or swelling g, in which channels it are formed. The uppermouths h of said channels are situated directly in front ofcorresponding openings at in the central feed-pipe, while the lowermouths h are situated directly above the series of holes in the conicalseparating-plates c. The number of openings i and channels itcorresponds to the number of rows or series of holes in theseparating-plates.

The operation of the device described above is the following: The wholemilk en ters the central feed-pipe and passes through the openings 'iinto the channels h in the upper plate and is therefrom distributed overthe liner. The milk passes further through the openings in theseparating-plates and fills successively all the spaces between theplates, whereby the separating process takes place in the well-knownmanner. The separated skim-milk escapes through holes 76 in thebowl-neck, while the separated cream passes through the channelsfin theflange 6 and escapes through holes Z and m in the prolongated part ofthe upper plate and in the bowl neck, respectively.

In the modification shown in Figs. l, 5, and 6 the flange 6 is formed inthe central feed-pipe and tightens against the inner wall of the upperplate. As in the first-described construction, the cream-passages arelocated in this flange and do not communicate with the inlet-passagesfor the whole milk, said latter passages being, as in thefirst-described construction, located in the thicker part or swelling ofthe upper plate. The operation of this modified device is the same asthat of the construction first described.

In Figs. 7 and 8 I have illustrated a modified form of upper plate,which may be supstituted for the plate shown in Figs. 46. This upperplate difl'ers from that shown in Figs. 4W6 in that the same is notprovided with a ring-shaped thicker part or swelling, but only withhumps a, in which the inletpassages for the skim-milk are located. Bythis construction the upper plate is somewhat lightened.

In Fig. 9 another modified device is illustrated, in which the upperplate does not perform its usual function of directing the flow ofskim-milk along its outer side and of cream along its inner side towardtheir respective discharge-orifices. Instead the skim milk, as is oftendone, may be thrown off through one or more pipes located inside thebowlneck. If such outlet-pipes for the skim-milk are used, the feeddevice for the whole milk may be modified, as shown in Figs. 9 and 10.As in the first-described construction, a designates the bowl, 6 thecentral feed-pipe, c the separating-plates, and d the upper or coveringplate. This latter, which is shown in top view in Fig. 10, is providedwith a ring-shaped flange 6, tightening against the central feed-pipe b,in-which flange the outlet-passagesffor the cream are located. Theinlet-channels 72/ for the whole milk are located in humps n, (or in aring-shaped thicker part or swelling of the covering plate,) and saidhumps may either abut against the outletpipes for the skimmilk or beplaced between them, and thereby abut against the inner wall of thebowl. If a ring-shaped swelling is used, the same is to be provided withgrooves, in which the outlet-pipes for the skimmedmilk are located. Theseparated cream rises through the passages in the chamber between theupper plate and the bowl-neck and escapes through the outlet m. In orderthat the skim-milk may not be mixed with the separated cream, a ring pis placed between the upper plate and the bowl through which the outerends of the outlet-pipes for the skim-milk extend.

In the modified feed device illustrated in Figs. 1 1 and 12 the centralfeed-tube b is pro vided with a flange 6, in which the creampassagesfare located. A ring-shaped piece 7" is fitted in between the liner andthe bowl, said ring tightening against said parts, as well as againstthe aforesaid flange on the central feedtube. In the said ring-shapedpiece channels it are located, forming passages for the incoming wholemilk and communicating with corresponding passages i in the centralfeed-tube. The ring 1" may be omitted, and tubes located immediately infront of the openings i in the central feedtube may be substituted.

In Fig. 12 I have shown the cream-passages f located within the flangeinstead of in the edge thereof. It is obvious that this will not changethe operation.

The modification illustrated in Fig. 13 resembles the construction shownin Fig. 9, differing therefrom in that the central feedtube 6 and theupper plate form a single piece. At the junction of these parts thepiece is somewhat enlarged, and in this enlarged part'thecream-passagesf are located. The passages for the incoming whole milkare located either in a ring-shaped enlargement or in humps n, thelatter being shown. in the drawings. In this case the central feed-tubeb and the shell or casing s, forming the bearing for the driving-shaft,may not form a single piece, but be separated from each other, as shown,in. order that the con- .ical plates may be taken out for cleaningpurposes.

lilaving now fully described my invention, what I claim, and desire toprotect by Letters Patent, is-

1. In a centrifugal liquid-separatm', the combination, with the bowl, ofa liner consisting of superposed conical division-plates and having adistributing-passage extending through the divisionplates at a radialdistanee from the center line of the bowl, corresponding to its neutralzone, a feeding device having a channel,one end of which is adapt ed toreceive the whole milk while the other end. is adapted to discharge thewhole milk into the upper end of the distributingqpassage.

2. In a centrifugal liquidse1; arator, the combination, with the bowl,of a liner consisting of superposed conical division-plates and having adistributing-passage extending through the division-plates at a radialdistance from the center line of the bowl corresponding to its neutralzone, a central feedtube having an orifice therein, and a feeding deviceinterposed between the feed-tube and the liner and having a channelcommunicating at one end with said orifice and at the other end withsaid distributing-passage.

3. In a centrifugal liquid-soparator, the combination, with the bowl, ofa liner consisting of superposed division-plates having a series ofvertical distributing-passages extending through the division-phites ata radial distance from the center line of the bowl corresponding to itsneutral zone, a feedtube having a series of orifices and a feedingdevice having channels registering with the orifices in the feed-tubeand the distributingpassages in the liner.

4t. In a centrifugal liquid-separater, the cornbim'ttion, with. thebowl, of a liner con.- sisting of superposed conical division-plates andhaving a distrihating-passage extending through the division-plates at aradial distance from the center line of the bowl corresponding to itsneutral zone, a central feedtube, and a feeding device located adjacentto the neck of the bowl and having a channel establishing communicationbetween the fecd-tuli e and the distributing-passagc.

5. In a centrifugal liquid-soparator, the combination, with the bowlhaving a creamoutlet in its neck, of a liner consisting of superposedconical division-plates and having a distributingpassage extendingthrough the division-plates at a radial distai'ice from.

the center line of the bowl corresponding to the neutral zone, a centralfeed-tube, and a feeding device having a channel establishingcommunication between the feed-tube and the distributing-passage, therebeing a vertically-extending orifice through said feedv device to form acommunication between. the cream zone of the liner and thecrea1n-outlet.

(i. In a centrifugal liquid-separator, the cmnbination, with the bowlhaving a creamoutlet in its neck, of a liner consisting of su- )e'rp sedconical division-plates andv having a distributing-passage extendingthrough the division-plates at a radial distance from the center line ofthe bowl corresponding to the neutral zone, a central feed-tulm, and afeeding device confined between the upper division-plate and the wall ofthe bowl and. having a channelestablishing conununication between thefeed-tube and the distrilnitingpassage.

7. In a centrifugal liquid-separator, the ctnnbination, with the bowlhaving a creamoutlet in its neck, of a liner consisting of superposedconical division-plates and having a distributing-passage extendingthrough the division-plates at a radial distance from the center line ofthe bowl corresponding to the neutral zone, a central feedtube, a flangethereon, a feeding device formed in the upper division-plate against theinner wall of which the flange of the central feedtube tightens, therebeing a channel in the feeding device connnunicating at one end with thedistributingpassage and at the other end with a channel extendingthrough the flanged part of the feed-tube.

8. In a centrifugal liquid-separater, the combination with the bowlhaving a creamoutlet in its neck, of a liner consisting of superposedconical division-plates and having a distributingpassage extendingthrough the division-plates at a radial distance from the center line ofthe bowl corresponding to the neutral zone, a central fcedtuhe, a flangethereon, a feeding device formed in the upper division-plate against theinner wall of which the flange of the central feed-tube tightens, therebeing a channel in. the feeding device coin inu nicating at one end withthe distributing-passagc and at the other end with a channel extendingthrough the flanged part of the filed-tube, there being avertically-extending orifice through said flange to form a com-;niunication between the cr aln zone of the liner and. thecrea1n-outlet.

In. testimony that I claim the foregoing as my invention I have signedmy name in presence of two subscribing witnesses.

BI RGE it It] U N UWIIHUM.

Witnesses Ha um? l junnu 1K A [A enar, Kn'uir Enrnxnn \Vrnauo.

